/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.ejb3.component;
import org.jboss.as.naming.ManagedReference;
import org.jboss.invocation.Interceptor;
import org.jboss.invocation.InterceptorContext;
import org.jboss.invocation.InterceptorFactory;
import org.jboss.invocation.InterceptorFactoryContext;
import org.jboss.invocation.Interceptors;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* An {@link InterceptorFactory} responsible for creating {@link Interceptor} instance corresponding to a <code>container-interceptor</code>
* applicable for an EJB
*
* @author Jaikiran Pai
*/
final class ContainerInterceptorMethodInterceptorFactory implements InterceptorFactory {
private final ManagedReference interceptorInstanceRef;
private final Method method;
/**
* @param interceptorInstanceRef The managed reference to the container-interceptor instance
* @param method The method for which the interceptor has to be created
*/
ContainerInterceptorMethodInterceptorFactory(final ManagedReference interceptorInstanceRef, final Method method) {
this.interceptorInstanceRef = interceptorInstanceRef;
this.method = method;
}
/**
* Creates and returns a {@link Interceptor} which invokes the underlying container-interceptor during a method invocation
*
* @param context The interceptor factory context
* @return
*/
public Interceptor create(final InterceptorFactoryContext context) {
return new ContainerInterceptorMethodInterceptor(this.interceptorInstanceRef, method);
}
/**
* {@link Interceptor} responsible for invoking the underlying container-interceptor in its {@link #processInvocation(org.jboss.invocation.InterceptorContext)}
* method
*/
private static final class ContainerInterceptorMethodInterceptor implements Interceptor {
private final ManagedReference interceptorInstanceRef;
private final Method method;
/**
* @param interceptorInstanceRef The managed reference to the container-interceptor instance
* @param method The method on which the interceptor applies
*/
ContainerInterceptorMethodInterceptor(final ManagedReference interceptorInstanceRef, final Method method) {
this.method = method;
this.interceptorInstanceRef = interceptorInstanceRef;
}
/**
* {@inheritDoc}
*/
public Object processInvocation(final InterceptorContext context) throws Exception {
// get the container-interceptor instance
final Object interceptorInstance = interceptorInstanceRef.getInstance();
try {
final Method method = this.method;
return method.invoke(interceptorInstance, context.getInvocationContext());
} catch (IllegalAccessException e) {
final IllegalAccessError n = new IllegalAccessError(e.getMessage());
n.setStackTrace(e.getStackTrace());
throw n;
} catch (InvocationTargetException e) {
throw Interceptors.rethrow(e.getCause());
}
}
}
}